[Soft-matter] Soft Matter & Complex Systems Seminar on 3 October 2025

[Piotr Szymczak]

Dear Colleagues,


On Friday 3 October 2025 at 9:30 AM at the UW Faculty of Physics 
(Pasteura 5, Warsaw; room 1.40) we are hosting a seminar during which 


Jordan Orchard (IFT UW, Warsaw)


will give a talk


Anomalous diffusion in billiard channels


Abstract: Polygonal billiard channels are examples of pseudo-chaotic 
dynamics, a combination of integrable evolution and sudden jumps due to 
singular points that arise from the corners of the polygon. Such 
pseudo-chaotic behaviour, often characterised by an algebraic separation 
of nearby trajectories, is believed to be linked to the wild dependence 
that particle transport has on billiard geometry. Borrowing ideas from 
the Zemlyakov-Katok construction, we derive an exact expression of a 
scattering map of the cell connecting the outgoing flow of trajectories 
to the unconstrained incoming flow. 


We warmly welcome everyone to attend the talk and the Soft Matter Coffee 
Break after the seminar, in room 2.63 (2nd floor).


Maria Ekiel-Jeżewska

Maciej Lisicki

Piotr Szymczak

Panagiotis Theodorakis